Improved ionic conductivity, potential window and dielectric strength in intercalated polymer nanocomposites

2019 ◽  
Author(s):  
Pritam ◽  
Anil Arya ◽  
A. L. Sharma
Keyword(s):  
Ionic Conductivity ◽  
Polymer Nanocomposites ◽  
Dielectric Strength

Topological-Structure Modulated Polymer Nanocomposites Exhibiting Highly Enhanced Dielectric Strength and Energy Density

2014 ◽  
Vol 24 (21) ◽  
pp. 3172-3178 ◽  
Author(s):  
Penghao Hu ◽  
Yang Shen ◽  
Yuhan Guan ◽  
Xuehui Zhang ◽  
Yuanhua Lin ◽  
...  
Keyword(s):  
Energy Density ◽  
Polymer Nanocomposites ◽  
Topological Structure ◽  
Dielectric Strength

scholarly journals Electrical Properties of PVA:PVP:PEG based Blend Polymer Electrolytes

2019 ◽  
Vol 9 (2S2) ◽  
pp. 291-294
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
Dielectric Strength ◽  
Xrd Analysis ◽  
Solution Casting ◽  
Casting Method ◽  
Novel Approach ◽  
Amorphous Nature ◽  
Solution Casting Method ◽  
Blend Polymer

This is a novel approach to get polyblend films with improved properties such as ionic conductivity and dielectric strength. Different ratios of PEG (5%, 10%, 15%, 20%, 25%, 30%) are added with optimized PVA: PVP ratio. PVA: PVP: PEG based BPEs are prepared by using solution casting method. The polymer PEG act as a plasticizer and chemically stable in air.The prepared electrolytes are characterized by XRD, FTIR and ionic conductivity studies. The XRD analysis shows amorphous nature of the polyblend electrolytes. Dielectric analysis is carried out for the BPEs. The higher conductivity is obtained for 20% PEG added polyblend electrolytes and it is 9.0x10-9 S/Cm. Thus, PVA: PVP: PEG (40:40:20) system is confirmed as optimized one for further studies to enhance the ionic conductivity

Dispersed structure and ionic conductivity of smectic clay/polymer nanocomposites

Polymer ◽  
2001 ◽  
Vol 42 (6) ◽  
pp. 2685-2688 ◽  
Author(s):  
M Okamoto ◽  
S Morita ◽  
T Kotaka
Keyword(s):  
Ionic Conductivity ◽  
Polymer Nanocomposites

Phosphonic Acid-Modified Barium Titanate Polymer Nanocomposites with High Permittivity and Dielectric Strength

2007 ◽  
Vol 19 (7) ◽  
pp. 1001-1005 ◽  
Author(s):  
P. Kim ◽  
S. C. Jones ◽  
P. J. Hotchkiss ◽  
J. N. Haddock ◽  
B. Kippelen ◽  
...  
Keyword(s):  
Barium Titanate ◽  
Polymer Nanocomposites ◽  
Phosphonic Acid ◽  
Dielectric Strength ◽  
High Permittivity

scholarly journals Investigation of Mg2+ ion on Structural, Morphological, FTIR, Dielectric and AC Conductivity of PVDF-HFP Based Solid Polymer Electrolytes and Application to Electrochemical Cell

2021 ◽  
Author(s):  
Anna Mallikarjun ◽  
Sangeetha Mahendrakar ◽  
M Vikranth Reddy ◽  
M Jaipal Reddy ◽  
J Siva Kumar ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Relaxation Time ◽  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
Dielectric Strength ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Cole Plot ◽  
Discharge Characteristics ◽  
Cell Discharge

Abstract In this paper, solid polymer electrolytes comprising of Poly (vinylidene-fluoride-hexafluoropropylene) (PVDF-HFP) polymer and Mg (ClO4)2 salt were prepared by employing the solution casting technique. The fabricated polymer-salt electrolyte membranes are exposed to XRD, FTIR and SEM studies. The real and imaginary part of dielectric permittivity is illustrated with the Cole-Cole plot. Static dielectric constant \({(\epsilon }_{s})\), dynamic dielectric constant \(\left({\epsilon }_{\infty }\right)\), dielectric strength \(({\Delta }\epsilon\)), dielectric loss (tanδ) and relaxation time (τ) are determined using the Cole-Cole plot. The electrochemical properties; cell stability, cell discharge characteristics, dc and ac conductivity are analyzed. Structural studies of XRD peaks are broadened to confirm the amorphous phase of polymer matrix. Morphological studies shows the presence of interlinked micro-pores promote for ease of mobility of Mg2+ ions which attribute to enhance ionic conductivity. The static dielectric constant \({(\epsilon }_{s})\), dynamic dielectric constant \(\left({\epsilon }_{\infty }\right)\), dielectric strength \(({\Delta }\epsilon\)), dielectric loss (tanδ) reach maximum but relaxation time (τ) decreases for an optimal concentration ratio of (100:40) PVDF-HFP: Mg (ClO4)2 that reveals fast hopping of ions from one site of the polymer chain to another. The highest ionic conductivity of 7.73333x 10− 4 Scm− 1 is obtained at room temperature for [PVDF-HFP: Mg(ClO4)2] polymer-salt electrolyte. The cell discharge characteristics of OCV and SCC of Mg/ [PVDF-HFP: Mg(ClO4)2] /I + C cell are found to be 1.8 V and 120 mA respectively The electrochemical stability was observed with a constant voltage of 0.43volt in a positive cycle and 0.4 volts of negative potential which favors an electrochemical membrane for battery applications

Electret effect in polymer nanocomposites (review

2019 ◽  
Vol 5 (2) ◽  
pp. 6-18
Author(s):  
V. A. Goldade ◽  
◽  
S. V. Zotov ◽  
V. M. Shapovalov ◽  
V. E. Yudin ◽  
...  
Keyword(s):  
Polymer Nanocomposites ◽  
Electret Effect
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